It is only correct if your handbook or door-pillar tyre label lists 285/50 R20 for your wheel and axle. Check whether it is specified for front, rear, or both, and match the required load index and speed rating. If your vehicle uses a staggered setup, confirm you are buying the size intended for that axle before ordering.
Start with the minimum load index and speed rating shown on the vehicle placard and choose a tyre that meets or exceeds them. This size is often fitted to heavier SUVs, so an under-rated tyre can affect safety, handling and insurance. If you regularly carry passengers, tow, or run a roof box, selecting an appropriate higher load rating can be beneficial as long as it matches your vehicle requirements.
Only do this if your manufacturer specifies mixed sizes for your exact model and wheel setup. Many SUVs use staggered sizing, but mismatched rolling circumference can upset traction control and AWD systems if the sizes are not approved. If you are replacing just two tyres, keep the size, load index, speed rating and ideally the same pattern consistent across the axle.
Summer tyres suit warmer conditions and deliver sharper steering feel in dry and wet roads above about 7C. All-season tyres are a strong year-round choice for mixed UK weather, especially if you want extra traction in cold, damp conditions without swapping sets. Winter tyres offer the best grip in snow and ice, and can be worth it if you drive regularly in colder regions or at higher elevations.
Choose XL if your vehicle placard specifies Extra Load or if you need the load index that only XL versions provide in this size. Run-flat should be selected only if your vehicle is designed for it or you specifically want that capability, as ride comfort and pricing can differ from standard tyres. If you are unsure, match what is currently fitted and cross-check the vehicle manufacturer guidance before purchase.